Rotary engine.



G. BOLTZ.

ROTARY ENGINE.

APPLICATION FILED NOV.25. 1913.

Patented Aug. 31, 1915.

3 SHEETSSHEET 1.

G. BOLTZ.

ROTARY ENGINE.

APPLICATION FILED NOV. 25, 1913. 1,151,562, Patented Aug. 31,1915.

3 SHEETSSHEET 2.

G. BOLTZ.

RVOTARY ENGINE. APPLICATION FILED NOV. 25. 1913.

Patnted Aug. 31, 1915.

3 SHEETS-SHEET 3.

Wi-fneoovzo I menses.

ent ies.

onoaensotrz, or DIGHTON, KANSAS.

ROTARY ENGINE.

Specification of Lette s Patent. mi i r A g; 31,

Application filed November 25, 1913. Serial No. 802,967.

' hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to engines and has speclal reference to an engine wherein the piston rotates continually in one direction and which is'known as a rotary engine.

The principal object of the invention is to improve and simplify the general con struction of devices'ofthis'character.

A second object of the inventionis to provide an improved arrangement for the stator and rotor of certain engines.

A third object of the invention is to provide an improved means for controlling the steam supply of'such an engine.

With the above and other objects in'view the invention consists in general of certain novel details of construction and combination of parts hereinafter fully described, illustrated in the accompanying drawings, and specifically claimed.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and Figure 1 is a side eleva v tion of an engine constructed inaccordance with this invention. Fig. 2 is a section on the line 22 of Fig. 1. Fig. 3 is a detail view showing the inside of one of the stator elements. Fig. t is a section on'the line H of Fig. 2. Fig. 5 is a section through, the rim of the engine showing the abut-.

ment. Fig. 6 is an enlarged detail view showing'the valve arrangement, the valve being shown in section. Fig. 7 is a detail perspective view of the abutment. Figs. 8

and 9 are detail views in section through the valve showing the same open and closed. I

In the present embodiment of this invention there is provided a base 10 'whereon are carried supports 11. These supports are connected, as will be hereinafter described, to the stator of the engine and this stator consists of two symmetrical halves. Each of these halves consists of a substantially cylindrical body portion 12 having the hollow space 13 and flange 14:. These two stator halves are secured together by bolts the rotor rim are similarly provided with grooves 23. The grooves 22 and 23 are, when the parts are assembled in opposition so that in; these grooves may be fitted the packing rings 24: which'thus serve to render the space 16 outside of the rotor steam tight with respect to the spaces between the stator and flange portion 20 of the rotor. It is to be understood that the stator sides are proe vlded with suitable wearing plates 25 and that the rotorsides are provided with similar wearing plates 26 so that these parts may berenewed after wear and also so that the rotor will fit tightly in the stator and thus prevent the waste of steam. The stator is supported by the supports 11 and is held from rotation in said support by means of suitable bolts 26.

Extending upward from the base 10 are standards 27 which are provided at their upper ends with bearings 28 The shaft 18 passes through the bearings 28 and where it passes through these bearings is provided with frusto-conical portions 29 which are surrounded by bushings 30 which have frusto-conical inner surfaces adapted to fit the portions 29 of the shaft and cylindrical outer surfaces adapted to lit the bearings 28. These bushings are held in position in the bearings by means of suitable bolts or set screws 31 sothat, in case of wear, it is sim ply necessary to loosen the said screws'and force the bushings 30 into engagement with k 'halves are each provided with a radial groove 84, said grooves being oppositely dis posed. In these grooves slides an abutment 35 having at its upper end a pair of spaced ears 36 between which is secured one end of 2 5 bar. .The upper end of this rack bar is con in arm 37" the upperend trlw'h eh reen es ,therethrough one end of-a spring 37 constantly urging the abutment 35' inward.

The grooves 34 extend inwardly of the portion of the stator occupied by the piston and the abutment 35 isprovided with extensions a 38 at its inner endto *fit the inward eXten-' sions" of the groove 34. Moreover the grooves 34 are provided with suitable wearing plates 39 to take, up: the wear' of the moving abutment j i o f One of the stator halves is provided with I a steam port,40,andfrom this steam port 40 leads a steam pipe 41. This steam pipe 41v is connectedto a valve casing 42' wherein is mounted a valve 43'having aport 44 extend' ing transverselytherethrough. The valve 43 5 is "likewise provided vwith a stem.;45 upon V which'issecured afgea-r 46.

- able guides ina frame 48 carried on the ups Thisrack bar is normally urgedupward by the action .ofa

Meshing with this gear 46 is a rack bar 47 I mounted in suitper side of the stator;

coil spring 49which is secured to the frame andbears against thelower end of said rack nected to one end of alever which is pivoted intermediate its'ends to the'fr'ame 48 v and the other end of this lever 50is engaged by a rod 51 which is in turnconnected to an eccentric rod 52 having its lower endconnected to an eccentric strap 53 surrounding an eccentric 54 keyed-to the shaftlS. The

' stator, islikewise provided withan exhaust port 55 from which leads a suitable. ,cXhaust' through a guide;

pipe 56. The rod 51 moves 57 on the frame 48.

mitted between the piston 32 and abutment 35 through the port 40. a This drives the rotoraround and vwhen the-rotor arrives at the propenpos'ition the slanting forward sides 33 of the'piston 32 engages the lower or inner edge ofthe abutment 35 and cause this abutment to rise against the action of thespring 37; Just prior to thisvtime the piston has uncovered the exhaust port 55 and the exhaust steam. escapes therefrom. As the piston moves past the abutment the Copiesof th is 'patent may be obtained for In the Operation ofrthedevice steam'is'ad vand reciprocable rod.

3 In testlmony whereof, I affiX my signa-u ture,1n the, presence oftwo witnesses;

latter drops on the descending'orirear side of said piston andsteam is again admitted between the piston and abutment thus ,causv ing a continuous rotation. It is to be noted that the steam is, cutofi'from time to time:

by the action of the eccentric, the eccentric causingthe eccentric rod-52, and consequentlythe-v rod 51 to reciprocate which in turncauses thelever'50 to operate andthis, through theactionof thetraclc and gear 46 oscillates the valve 43---and consequently opens and closes thesteam pipe. lt'is obvlous that suitable oil cups may be supplied to any of the friction surfaces ofthedevice but these have not been deemed necessary,

here to be shown as they form no particular part of the lnventlon' and are common in all engines where two surfaces come together,

one of. Which is a moving surface d I a I There has thus been provided a simple and efficient device of the kind described and as come pi-operlywithin the scope claimed. Hav ng thus-described the inventiomwhat isclaimed as new, is I i The combinatlon with rotary engine provided with a shaft; of means to intermit-. tentlysupply steam to said engine compris-- ing aneccentric mounted on said shaft, a strap surrounding said eccentric,a recipro cable rod connected to said strap, a steam gear connected to'said valve, a rackengaglng sald gear, and means to connect the rack Witnesses:

E. D. HYAMEs, BERTHA BOLTZ. is

five cents each, by addressin f a osionr ailments Washington, D. G. j i 7 minor supply pipe having an oscillatory valve, a, 

